body{background: url(./bg.jpg) repeat;background-size: 100% auto;}
.btn {
    margin: 10px;
    width: 100px;
    height: 30px;
    line-height: 30px;
    border: none;
    font-size: 14px;
    cursor: pointer;
    outline: none;
    border-radius: 2px;
    transition: all .5s;
}
#create {
    background: #f27197;
    color: #fff;
}

.m-note {
    border-radius: 4px;
    position: absolute;
    left: 20px;
    top: 70px;
    /* width: 320px; */
    background-color: hsla(0,0%,100%,.9);
    -webkit-box-shadow: 0 5px 10px rgb(0 0 0 / 50%);
    box-shadow: 0 5px 10px hsl(0deg 0% 56% / 50%);
}
.m-note .u-close {
    width: 30px;
    height: 30px;
    position: absolute;
    left: 50%;
    margin-left: -15px;
    top: 5px;
    background: url() no-repeat;
    cursor: pointer;
}
.m-note .u-bar {
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
    height: 50px;
    background: transparent;
}
.m-note .m-time {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
    text-align: center;
    line-height: 35px;
    height: 35px;
    padding: 0 10px;
    background-color: rgba(0,0,0,.3);
    color: #333;
}
.u-edit,
.m-note textarea{
    width: 100%;
    height: calc( 100% - 35px - 50px );
    padding: 12px;
    box-sizing: border-box;
    border: 0;
    box-shadow: none;
    outline: none;
    font-size: 24px;
    font-family: microsoft yahei;
    font-weight: 300;
}